package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {


    @Pointcut("execution(* com.sky.mapper.*.*(..)) &&@annotation(com.sky.annotation.AutoFill)")
    public void autoFillPoint(){}



    @Before("autoFillPoint()")
    public void autofill(JoinPoint joinPoint){
      log.info("开始进行公共字段填充");

        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        AutoFill annotation = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType value = annotation.value();//获得数据操作类型


        Object[] args = joinPoint.getArgs();
        if (args==null||args.length==0)
            return ;
        Object arg = args[0];
        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();
        if(value==OperationType.INSERT){
            try {
                Method setCreateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setCreateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                setCreateTime.invoke(arg,now);
                setCreateUser.invoke(arg,currentId);
                setUpdateTime.invoke(arg,now);
                setUpdateUser.invoke(arg,currentId);

            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        else if(value==OperationType.UPDATE){
            try {
                Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                setUpdateTime.invoke(arg,now);
                setUpdateUser.invoke(arg,currentId);

            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }

    }
}
